JP5246443B2 - Cylindrical steel end joint fitting and its joint structure - Google Patents

Description

  In the present invention, for example, an end portion of a cylindrical steel material such as a square pipe or a round pipe used as a pillar material, a beam material, a body edge material, or a suspended bundle material in a steel structure is used as an L-shaped steel material, an I-shaped steel material, or an H-shaped steel material. The present invention relates to a tubular steel material end joint fitting used for joining to other tubular steel materials, joining members such as channel steel, and a joining structure thereof.

  Conventionally, as this kind of cylindrical steel material end joint fitting, for example, a fixed joint plate welded and fixed to the end portion of the cylindrical steel material and the outer plate surface of the fixed joint plate are formed to project orthogonally The thing of the structure which consists of a protrusion joining board joined to a joining member with a volt | bolt fastening structure is known.

  Then, the fixed joint plate is formed in a shape slightly larger than the end face shape of the tubular steel material, the fixed joint plate is fillet welded to the end face of the tubular steel material, and after welding, the protruding joint plate is bolted to the joining member. It joins by structure, and this makes it join a cylindrical steel material and a joining member, or the above-mentioned fixed joint board is formed in the same shape as the end face shape of a cylindrical steel material, and this fixed joint board and cylindrical steel material A groove is formed on the butt angle face, and the fixed joint plate and the tubular steel material are butt-welded and welded together. After welding, the projecting joint plate is joined to the joining member by a bolt fastening structure, thereby the tubular steel material and the joining member. Will be joined.

Japanese Patent Laid-Open No. 10-24393

  However, in the former structure of the conventional structure, although the weld strength between the fixed joint plate and the tubular steel material can be increased by fillet welding, the fixed joint plate is formed to be slightly larger than the end face shape of the tubular steel material. Therefore, the fixed joint plate protrudes from the outer peripheral surface of the tubular steel material, and a protruding portion that protrudes from the outer peripheral surface of the tubular steel material is formed. This may hinder the progress of the work, and the protruding part may interfere with the transportation, requiring a great deal of labor and careful work. As a result of welding, the weld strength between the fixed joint plate and the tubular steel material is reduced, and a protruding portion made of a weld bead is exposed and formed at the abutting portion between the fixed joint plate and the tubular steel material. It has the disadvantage that grinding finishing operations for removing parts may also be required.

  The present invention aims to solve these disadvantages. Among the present inventions, the invention according to claim 1 is a joining metal fitting used when joining the end of a tubular steel material to a joining member. A fixed joint plate that is welded and fixed to the end of the tubular steel material, and a protruding joint plate that is formed to project orthogonally to the outer plate surface of the fixed joint plate and joined to the joining member, The fixed joint plate is formed in a shape that substantially matches the inner peripheral surface shape of the cylindrical steel material, and a fitting surface that allows the protruding joint plate to be fitted into the end portion inward position of the cylindrical steel material, and The tubular steel end joint fitting is characterized in that a notch step portion formed of a positioning surface that is in contact with the end surface of the tubular steel material and determines the insertion position of the fixed joint plate is formed.

  The invention described in claim 2 is characterized in that the fixed joint plate and the protruding joint plate are formed separately, and the invention described in claim 3 is the separate body. The fixed joint plate and the projecting joint plate formed on the base plate are integrally welded in a state of being positioned by mutual fitting of the fitting convex portion and the fitting groove portion. The invention described in 4 is characterized in that the protruding joint plate and the joining member are joined by a bolt fastening structure.

  In addition, the invention according to claim 5 uses the tubular steel material end joint fitting according to any one of claims 1 to 4 and has a shape substantially matching the shape of the inner peripheral surface of the tubular steel material. Cylindrical steel end joining, characterized in that the fixed joining plate is welded and fixed to the inside position of the end of the tubular steel material by the notch step portion, and the protruding joining plate is joined to the joining member. In the structure.

  As described above, in the invention according to claim 1 or 5, when joining the end of the tubular steel material to the joining member, the present invention inserts the fixing joint plate of the joining metal fitting into the end of the tubular steel material. The fixed joint plate is fixed to the cylindrical steel material by fillet welding between the inner peripheral surface of the tubular steel material and the outer peripheral surface of the fixed joint plate. At this time, the fixed joint plate is made of the cylindrical steel material. It is formed in a shape that substantially matches the shape of the inner peripheral surface, and is fixed to the projecting joint plate by allowing the fixed joint plate to be fitted into the inner surface of the end of the tubular steel material and the end surface of the tubular steel material. Since the notch step part consisting of the positioning surface that defines the insertion position of the plywood is formed, the welding fixation between the joint fitting and the fixed joint plate is welding at the inner position of the tubular steel material, and the weld bead is the tubular steel material No longer exposed to the outer peripheral surface of the weld bead The efficiency of the joining work can be achieved, and the fixed joint plate is formed in a shape that substantially matches the inner peripheral surface shape of the tubular steel material, so that it is easy to weld the fixed joint plate and the tubular steel material, The inward position of the fixed joint plate relative to the tubular steel material can be determined by the positioning surface that abuts the end surface of the tubular steel material and determines the insertion position of the fixed joint plate, and it is easy to weld the fixed joint plate and the cylindrical steel material. It can be carried out.

  Further, in the invention described in claim 2, since the fixed joint plate and the protruding joint plate are formed separately from each other, it is easy to manufacture the joint fitting compared to the structure in which the joint fitting is integrally formed. And the manufacturing cost can be reduced. In the invention according to claim 3, the fixed joint plate and the projecting joint plate formed separately are the fitting convex portion and the fitting groove portion. Since the joints are integrally welded in a state of being positioned by mutual fitting, the joint fitting can be easily formed integrally. In the invention according to claim 4, the protruding joint plate and the above Since the joining member is joined by a bolt fastening structure, the tubular steel material and the joining member can be easily joined via the joining fitting.

It is a perspective view of the joining metal fitting of the embodiment of the present invention. It is a disassembled perspective view of the joining metal fitting of the embodiment of the present invention. It is a fragmentary perspective view of the junction structure of the embodiment of the present invention. It is a fragmentary sectional view of the junction structure of an embodiment of the invention. It is a partial expanded sectional view of the junction structure of the embodiment of the present invention. It is a fragmentary perspective view of the junction structure of the embodiment of the present invention. It is a fragmentary longitudinal cross-sectional view of the junction structure of the embodiment of the present invention. It is a partial plane sectional view of the junction structure of an embodiment of the invention.

  1 to 8 show an embodiment of the present invention, and K is a joining metal fitting, and is used when joining an end of a cylindrical steel material W to a joining member S. In this case, a square pipe-like shape is used. The fixed joint plate 1 welded and fixed to the end of the tubular steel material W and the outer plate surface of the fixed joint plate 1 are formed to project orthogonally, and in this case, the projection joined to the joining member S made of H-shaped steel. In this case, the fixed joint plate 1 is formed in a shape substantially matching the shape of the inner peripheral surface of the tubular steel material W, and the protruding joint plate 2 is formed in the end portion of the tubular steel material W of the fixed joint plate 1. A notch step portion 3 is formed, which includes a fitting surface 3a that allows fitting in one direction, and a positioning surface 3b that abuts the end surface of the tubular steel member W to determine the fitting position of the fixed joint plate 1.

  In this case, the fixed joint plate 1 and the projecting joint plate 2 are formed separately from each other. In this case, the fixed joint plate 1 and the projecting joint plate 2 formed in the separate body are fitted with the protruding protrusions 2a. 2a and fill groove welded at the welded portion P in a state of being positioned by mutual fitting of the fitting grooves 1a and 1a, two outer surfaces orthogonal to each other among the four outer surfaces of the fixed joint plate 1 1b and 1b are formed on a surface that matches two inner peripheral surfaces of the four inner peripheral surfaces of the cylindrical steel material W, and a gap is formed between the other two surfaces and the inner surface of the cylindrical steel material W. Thus, the fixed joint plate 1 is formed in a shape that substantially matches the inner peripheral surface shape of the tubular steel material W, and the fixed joint plate is brought into contact with the two outer surfaces 1b and 1b and the two inner surfaces of the tubular steel material W. 1 and the cylindrical steel material W are positioned in the surrounding direction.

Further, in this case, as shown in FIGS. 6 to 8, a structure is shown in which two cylindrical steel materials W · W are joined to the left and right sides of the joining member S using two joining brackets K · K. The joining plates S ₁ and S ₁ are welded and fixed to the left and right sides of the joining member S at the welds N, and through holes 4a and 4a are formed in the projecting joining plates 2 and 2 of the joining fittings K and K, respectively. S ₁ · _{S 1} to form a through hole 4b · 4b, through-holes 4a, through holes 4b, the bolt fastening structure 4 consisting of bolts 4c and nuts 4d tubular steel W via a joint device K and joining member S Are to be joined.

Since this embodiment is configured as described above, in this case, the fixed joint plate 1 and the projecting joint plate 2 are formed separately as shown in FIG. 2, and the fixed joint plate 1 and the projecting joint plate 2 are formed as shown in FIG. Are integrally formed by welding, and when joining the end portion of the tubular steel material W to the joining member S, the joining bracket K is fixed to the end portion of the tubular steel material W as shown in FIGS. The joint plate 1 is inserted, and the fixed joint plate 1 is fixed to the tubular steel material W by fillet welding between the inner peripheral surface of the tubular steel material W and the outer peripheral surface of the fixed joint plate 1. joining plate S ₁ is fixed, it will be joined by a bolt fastening structure 4 outward protruding joint plywood 2, which is protruded perpendicularly to the plate surface to the junction plate S ₁ joint members S of the fixed passage plywood 1 .

  At this time, the fixed joint plate 1 is formed in a shape that substantially matches the inner peripheral surface shape of the tubular steel material W, and allows the projecting joint plate to be fitted into the end portion inward position of the tubular steel material. Since the notch step portion 3 is formed of the positioning surface 3b that is in contact with the fitting surface 3a and the end surface of the tubular steel material W to determine the fitting position of the fixed joint plate 1, the welding between the joint fitting K and the fixed joint plate 1 is performed. Fixing is welding at the inner position of the tubular steel material W, so that the weld bead B is not exposed to the outer peripheral surface of the tubular steel material W, and there is no protruding portion due to the weld bead B. Since the fixed joint plate 1 is formed in a shape that substantially matches the inner peripheral surface shape of the tubular steel material W, it is easy to weld the fixed joint plate 1 and the tubular steel material W. Position that determines the insertion position of the fixed joint plate 1 by contacting the end surface of the steel plate W Can define an inner position of the fixed joint plywood 1 for tubular steel W by fit surface 3b, it is possible to easily perform welding between the fixed passage plywood 1 and the tubular steel W.

  In this case, as shown in FIG. 2, the fixed joint plate 1 and the protruding joint plate 2 are formed separately from each other, so that the joint fitting K can be easily manufactured as compared with a structure in which the joint fitting K is integrally formed. In addition, as shown in FIG. 2, the fixed joint plate 1 and the projecting joint plate 2 formed separately are fitted with the projections 2a and 2a and the fitting. Since the grooves 1a and 1a are integrally welded in a state of being positioned by mutual fitting, the joint fitting K can be easily formed integrally. In this case, the protruding joint plate 2 and the joint member are also formed. Since S is joined by the bolt fastening structure 4, the tubular steel material W and the joining member S can be easily joined via the joint fitting K.

  The present invention is not limited to the above-described embodiment. For example, the tubular steel material W is not limited to a square tubular steel material, and can be applied to a round pipe, a deformed tubular steel material, and the like. The member S can be applied to various steel materials such as L-shaped steel material, I-shaped steel, other tubular steel materials, and grooved steel as well as H-shaped steel materials. Further, the shape and structure of the projecting joining plate 2 and the notch step portion 3, and other fastening means are used instead of the bolt fastening structure, and the design is appropriately selected.

  As described above, the intended purpose can be sufficiently achieved.

DESCRIPTION OF SYMBOLS K Joining metal fitting W Cylindrical steel material S Joining member 1 Fixed joining board 1a Fitting groove part 2 Protruding joining board 2a Fitting convex part 3 Notch step part 3a Insertion surface 3b Positioning surface 4 Bolt fastening structure

Claims (5)

  It is a joining metal fitting used when joining the end of a cylindrical steel material to a joining member, and is orthogonal to the outer plate surface of the fixed joint plate that is welded and fixed to the end of the cylindrical steel material. The fixed joint plate is formed in a shape that substantially matches the shape of the inner peripheral surface of the cylindrical steel material, and is formed on the projecting joint plate. A notch step portion is formed which includes a fitting surface that allows insertion of the cylindrical steel material into the end portion inward position and a positioning surface that abuts the end surface of the cylindrical steel material to determine the fitting position of the fixed joint plate. A tubular steel end joint fitting characterized by the above.   The tubular steel end joint fitting according to claim 1, wherein the fixed joint plate and the projecting joint plate are formed separately from each other.   The fixed joint plate and the projecting joint plate formed in the separate body are integrally welded in a state of being positioned by mutual fitting of the fitting convex portion and the fitting groove portion. Cylindrical steel end joint.   The cylindrical steel material end joint fitting according to any one of claims 1 to 3, wherein the protruding joint plate and the joining member are joined by a bolt fastening structure.   The tubular steel material end joint fitting according to any one of claims 1 to 4 is used, and the fixed joint plate having a shape substantially matching an inner peripheral surface shape of the tubular steel material is formed by the notch step portion. A tubular steel end joining structure, wherein the projecting joining plate is joined to the joining member by being welded and fixed at an end inward position of the tubular steel material, and the protruding joining plate is joined to the joining member.